Individual protector unit.



PATENTED NOV. 5, 1907.

I. B. COOK. INDIVIDUAL PROTECTOR UNIT.

APPLIOA'I'IOK FILED T33. 11, 1907- mvznron: 5% Q r UNITED STATES PATENT OFFICE.

FRANK n. cooK, or omosoo, ILLINOIS.

mmvmosL PROTECTOR rmrr.

Original application filed Jon. 18, 1906. Boris-l No. 296,714.

To all whom it may concern:

Be it known that I, FnANK B. Goon, a citizen of the United States of America, residing at Chicago, in the county of Cook and State ofIllinois, have invented a new and useful Individual Protector Unit, of which the following is a specification, reference being bad to the accompanying drawings, illustrating Same.

This applicationis a division of my application for Letters Patent on cable terminal and system of protection, Serial No. 915,714.

My present invent ion relates to electrical protectors, and in particular to such protectors comprising fuses and lightning arrestcrs The principal obj cls of my invention are to provide a compact and simplified protector unit adapted to be mounted on cable terminals or in other suitable.

places, for protecting lines of thesystcm; to provide a substantial construction in such a protector unit and means for readily mounting same in place.

Other objects will be apparent from the following specification.

In my present invention I have devised an individual protector unit adapted to be mounted singly on a cable terminal to accommodate a pair of wires of the cable which are to be immediately placed in service. The wires of the cable which are not to be used until some later time, are preferably left deadended and are not provided with protection. As other wires of the cable are put into service, more individual protector units may be mounted on the cable terminal to correspond with and protect the new wires. With this arrangementl can distribute a cable in multiple, at several different points, and use protection for each pair of the wires distributed, at one point only, where the pair is to be carried off to the drop-wires. If it is desired to change the drop-wires on a certain pair, from one point of distribution to another, the protector unit is also changed fromthe one point of distribution to the other, along with the drop-wires. it will readily be seen that with such a system the protection used is no more.

than the protection used on a system without multiple distribution, and that all of the features of a multiple-distribution system are provided.

I will more particularly describe my invention by reference to the accompanying drawings, in which,-

Figure 1 is a side elevation of the individual protector unit of my present invention; and Fig.- 2 is a top view of Fig. 1, with the tubular fuses removed.

Like characters refer to like parts in the several figures.

The individual protector unit comprises a sheetmetal supporting strip 16, ribbed as at 1.7 to stiffen same and to which are mounted suitable insulating blocks lfi 18 preferably of rubber. The fuse Specification of Letters Potent.

Patented Nov. 5, 1907.

Divided and this application filed February 11. 1907. Serial No. 356.881.

clamping springs 19 and 20 are preferably secured to the hard rubber blocks 18 18 by being forcibly inserted through holes therein, preferably as shown, which construction holds the springs 19 and 20 very rigid, Inclosed fuses 21 21 are suitably pressed into place in connection with. springs 19 and 20, preferably as shown. Lightning arresters 22 22 are suitably sup" ported between a bent-up portion 23 of the base strip 16, and contact springs 24 24. Insulating blocks 18 18 are preferably riveted to the base strip 16 by hollow rivets 1, 1 which are adapted to receive screws for mounting the protector unit inplace. The insulating blocks 18 18 are kept from turning upon the mounting strip 16 by prongs 2 2 formed out-of the strip 16. When the fuses 21 21 are'removed from springs 19 20, the protectonunit may be readily mounted in place by two screws inserted through hollow rivets 1, 1. The circuit conductors may be soldered or otherwise secured to the terminals 12 13..

Each spring 24 has a-portion 3 formed thereon to provide a stop for one' of the electrodes of its lightning arrester 22. The spring clamping means for the in- 1 closed fuses 21 21 will be readily understood without further detailed description here. I

I do not wish-to limit this invention to the particular details of construction as shown in the drawings, as many modifications may be made therein .without departing from the spirit of the invention.

What I claim astm'y invention and desire to secure,

by Letters Patent, is

1. An individual protector. comprising a sheet'metal base, insulating portions secured to one side of the said base, spring members carried by the said insulating portluns and inserted through holes therein, and suitable fuses and lightning urresters held in place by the said spring members.

L. .-\n individual protector comprising a ribbed sheetinctul base, insulatingportions, tubular rivets securing the said insulating portions to the said base, the said rivets being adapted to receive mounting screws, spring members rigidly secured to the said insulatingportions, lnciosed fuses carried by the said spring members,-and lightning arreslers suitably held between certain ones of the spring members and a portion of the said base.

3. An individual protector unit comprising a sheetmelul base portion, insulating blocks mounted on one side of the base portion, contact springs curried by the insulating blocks, a pair of inclosed fuses suitably clamped in plnce by the said contact springs. a bent-up portion at one end of the said base portion, and n palnof lightning nrrosters suitably mounted against the said bent-up portion at one end of the fuses. at an angle with the base portion.

-I. An individual protector unit comprising a sheetmetul base portion having a bent-up portion at one end thereof and suitablev holes therethrough for mounting .sume, insulating blocks carried by the said base portion,

contact member mounted ou on e side of the said blocks, a

I that the.

' mounting strip, a pair of tubular fuses mounted ,suhstam H tially parallel with the said strip and lengthwisethereof, 1a pair of lightning arresters mounted at one end of the .fuses, in an upwardly extending position, suitable contact 5 members for holding the fuses and lightning arresters in place and suitable meansfor connecting the several protective devices for use. 2

6. An individual protector unit compl'isidg a sheet- Inetal mounting plate, insulating blocks'secured thereto by hollow rivets adapted to receive screws or bolts for mount scribed, comprising a ribbed sheebmetal base having one' end portion bent at .an angle with the base, insulating.

blocks secured to the base by hollowrivets adapted toJreceive mounting screws, prongs on the base portion adapted to prevent the insulating blocks from turning-thereon, contact spring members inserted through holes in the inv sulating blocks to securely mount them in place, lnclosed fuses clamped in place by the said contact spring members,

and lightning arresters at oneend of the fuses held -in place between the said contact spring members and the bent-up portion of the said base.

8. An individual protector unit omprising a metallic ground strip, insulating portions cuzried by the ground strip, suitable contact members carried by the said insulating portions, a pair of fuses carried by the said contact m'embers, substantially parallel with the said strip and lengthwise thereof, a pair of lightning arresters at one end ofthe said fuses, electrically connected with the saidground strip, and suitable. means for connecting the several protective devices for use. I

9. An individual protector unit comprising a metallic ground strip, insulating portions carried by the ground strip, suitable contact members carried by the said insulating portions, a fuse carried by the said contact mem-' bers, substantially parallel with the said strip and lengthwise thereof, a lightning arrestel at one end of the fuse, electrically connected with the said ground strip, and suita'ble means for connecting, the fuse and lightning arrester for use. I As inventor of the foregoing-I hereunto subscribe my name in the presence of two subscribing witnesses, this 8th day of February,' 1907 FRANK B. COOK. Witnesses:

FREDERICK It, PARKER, CLAnnNcs E. Coos.

It is hereby certified that in Letters Patent No. 870,530,-granted November 5, 1907,

,upon the application. of Frank B. Cook, of Chicago, Illinois, for an improvement in Individual Proteotor'Units, an error appears in the printed specification requiring correction, as follows: On page 1,- lines 112 and 113, the worth carried 'by the said base portion, contact members mounted on one side of should be stricken out and the following inserted instead, mmmjod on one aide of the said Me portion, will: members carried by; and that thesaid Letters Patent should be read with this correction therein n l-sf some may conform toth'e record of thexiase in the PatentOfiice. fiignedhnd sealed this 3d day of December, A. 1)., 1907.

i o. o. BILLINGS, Acting Commissioner of Patents. 

